Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-24628
Schneider, G (2005). A Broad-Coverage, Representationally Minimalist LFG Parser: Chunks and F-Structures Are Enough. In: LFG05, Bergen, Norway, 18 July 2005 - 20 July 2005.
A major reason why LFG employs c-structure is because it is context-free. According to Tree-Adjoining Grammar (TAG), the only context-sensitive operation that is needed to express natural language is Adjoining, from which LFG functional uncertainty has been shown to follow. Functional uncertainty, which is expressed on the level of f-structure, would then be the only extension needed to an otherwise context-free processing of natural language. We suggest that if f-structures can be derived context-freely, full-ﬂedged c-structures are not strictly needed in LFG, and that chunks and dependencies may be sufﬁcient for a formal grammar theory. In order to substantiate this claim, we combine a projection of f-structures from chunks
model with statistical techniques and present a parser that outputs LFG f-structure like representations. The
parser is representationally minimal, deep-linguistic, robust, and fast, and has been evaluated and applied.
The parser addresses context-sensitive constructions by treating the vast majority of long-distance dependencies by approximation with ﬁnite-state patterns, by post-processing, and by LFG functional uncertainty.
|Item Type:||Conference or Workshop Item (Other), refereed, original work|
|Communities & Collections:||06 Faculty of Arts > Institute of Computational Linguistics|
06 Faculty of Arts > English Department
|DDC:||000 Computer science, knowledge & systems|
820 English & Old English literatures
|Uncontrolled Keywords:||LFG, lexical-functional grammar, formal grammar, dependency grammar, TAG, tree-adjoining grammar, parsing, functional uncertainty|
|Event End Date:||20 July 2005|
|Deposited On:||23 Dec 2009 05:19|
|Last Modified:||09 Jul 2012 04:01|
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